Writing instrument

Details Writing instrument Writing instrument

1989-01-19

1993-02-02

Holtje, Nelson C.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 51, D19 56

Patent

active

D03329631

REFERENCES:
patent: D113633 (1939-03-01), Kahn
patent: D124248 (1940-12-01), Dreyfuss
patent: D179982 (1957-04-01), Rhoades
patent: D215626 (1969-10-01), Jonkers
patent: D242792 (1976-12-01), Lottus
patent: D258219 (1981-02-01), Oka
patent: D260021 (1981-07-01), Carre
patent: D309633 (1990-07-01), Itoh
patent: 3637316 (1972-01-01), Bross

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